3.2009年“世界环境日”的主题是:“团结起来应对气候变化”。下列认识不正确的是
(A)植树造林,严禁乱砍滥伐
(B)在生产和生活中提倡使用节能技术和节能用具
(C)提倡乘坐公交车、骑自行车或步行的方式出行
(D)开发新能源,禁止开采和使用化石燃料
2.下列有关空气各成分的说法正确的是
(A)氧气的化学性质比较活泼,属于可燃物
(B)氮气的化学性质不活泼,可用于食品防腐
(C)空气质量报告中所列的空气质量级别越大,空气质量越好
(D)二氧化碳在空气中含量增多会引起温室效应,属于空气污染物
1.“民以食为天”。下列过程中发生了化学变化的是
(A)淘米 (B)洗菜 (C)苹果榨汁 (D)葡萄酿酒
30. was a well -known fact.
A.That their team was weak B.That their team being weak
C.Their team was weak D.If their team was weak
[答案]:
1 C 2
B 3
D 4 C 5
D 6 A 7
B 8
B 9 A 10
B
11 B 12 C 13 D 14 D 15 B 16 B 17 B 18 B 19C 20 A
21 B 22 B 23 A 24 C 25 B 26C 27 D 28 C 29 B 30 A
29. there is life on another planet is almost impossible.
A.How B.That
C.Why D.Whether
28.The problem is will go .
A.that B.that who
C.who D.whoever
27. nothing to do with us .
A.What he did is B.What he has done
C.What did he do D.What he has done has
26.Word came I was wanted at the office.
A.which B.why
C.that D.whether
25. told yuou that was lying .
A.who B.whoever
C.Anyone D.The person
24.The town is no longer it was ten years ago.
A.which B.that
C.what D.when
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